Saran

BAB V KESIMPULAN DAN SARAN

5.2 Saran

Saran untuk penelitian selanjutnya adalah perlu dilakukan uji keasaman material hasil sintesis, sehingga diketahui tingkat keasaman Lewis maupun Brønsted katalis yang selanjutnya dapat dioptimalkan aplikasinya sebagai katalis.

71

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79 LAMPIRAN A SKEMA KERJA A.1 Sintesis ZIF-8

- Diaduk hingga larut 1,313 g

2-metil imidazol

15 mL DMF

Larutan 2-Metil imidazol 2,091 g

Zn(NO3)2.4H2O

15 mL DMF

- Diaduk hingga larut

Larutan Zn(NO3)2 Larutan 2-metil imidazol

- Diaduk selama 30 menit Campuran

- Dipanaskan dalam oven pada suhu 120oC selama 24 jam - Didinginkan pada suhu

kamar

Terbentuk 2 lapisan yang

terpisah

sempurna - Didekantasi

Cairan jernih Padatan putih

- Direndam dalam 15 mL metanol selama 24 jam ( 2 kali )

- Didekantasi

Padatan putih Cairan jernih

- Dipanaskan dengan oven pada suhu 70°C selama 2 jam - Dikarakterisasi

XRD FTIR SEM TGA Adsorpsi-Desorpsi N2

A.2 Sintesis ZIF-8 pada Pendukung Al-MCM-41

1,313 g 2-Metil Imidazol

15 mL DMF

Campuran 2-Metil imidazol , Al-MCM-41

- Diaduk selama 30 menit Al-MCM-41*

Keterangan:

* Pada penelitian ini dilakukan variasi massa Al-MCM-41 yaitu : 50 mg, 100 mg, 200 mg dan 400 mg

2,091 g Zn(NO3)2.4H2O

15 mL DMF

- Diaduk hingga larut

Larutan Zn(NO3)2 Campuran 2-Metil imidazol; Al-MCM-41

- Diaduk selama 2 jam Campuran

- Dipanaskan dalam oven pada suhu 120oC selama 24 jam - Didinginkan pada suhu kamar

Terbentuk 2 lapisan yang

terpisah

sempurna

- Didekantasi

Cairan jernih Padatan putih

- Direndam dalam 15 mL metanol selama 24 jam (2 kali) - Didekantasi

Padatan putih Cairan jernih

- Dipanaskan dalam oven pada suhu 70°C selama 2 jam - Dikarakterisasi

XRD FTIR SEM TGA Adsorpsi-Desorpsi N2

LAMPIRAN B

PERHITUNGAN MASSA REAKTAN B.1 Komposisi massa reaktan ZIF-8

Diketahui :

Mr Zn(NO3)2.4H2O = 261,4472 g/mol Mr 2-metil imidazol = 82,1038 g/mol Mr N’N-dimetil formamida = 73,09 g/mol

ρN’N-dimetil formamida = 0,948 g/mL a. Perhitungan massa logam, ligan dan pelarut

Jika digunakan 0,008 mol logam Zn(NO3)2.4H2O, maka massa logam Zn adalah

Massa Zn(NO3)2.4H2O = mol x Mr Zn(NO3)2.4H2O = 0,008 mol x 261,4472 g/mol Massa Zn(NO3)2.4H2O = 2,091 g

Perbandingan logam : ligan: pelarut adalah 1:2:24,31 Mol 2-metil imidazol = 2 x mol Zn(NO3)2.4H2O

= 2 x 0,008 mol Mol 2-metil imidazol = 0,016 mol

Massa 2-metil imidazol = mol x Mr 2-metil imidazol = 0,016 mol x 82,1038 g/mol Massa 2-metil imidazol = 1,313 g

Mol N’N-dimetil formamida = 24,31 x mol Mr Zn(NO3)2.4H2O = 24,31 x 0,008 mol

Mol N’N-dimetil formamida = 0,1944 mol

Massa N’N-dimetil formamida = mol x Mr DMF

= 0,1944 mol x 73,09 g/mol = 14,208 g

Volume N’N-dimetil formamida= massa

ρ = 14,208 g

0,948 g/mL

LAMPIRAN C

PERHITUNGAN KRISTALINITAS

Nilai derajat kristalinitas dihitung dengan perbandingan persentase total 3 puncak karakteristik suatu material dengan persentase total 3 puncak karakteristik suatu material yang memiliki nilai terbesar dengan asumsi 100%. Adapun contoh perhitungan derajat kristalinitas dari material ZIF-8/AM50 adalah sebagai berikut:

Diketahui:

Puncak karakteristik ZIF-8, yaitu : Puncak 1 = 22070,02

Puncak 2 = 1789,44

Puncak 3 = 8091,54

Total area dibawah kurva = 31951 Puncak karakteristik ZIF-8/AM50, yaitu : Puncak 1 = 16689,78

Puncak 2 = 566,12

Puncak 3 = 1689, 95 Total area dibawah kurva = 18945,85 Ditanya: Derajat kristalinitas ZIF-8/AM50 Jawab:

Kristalinitas ZIF-8/AM50 = ^{Luas area dibawa kurva yang dicari}_{Luas area dibawah kurva terbesar}

x 100%

= 18945,85

31951

x 100%

LAMPIRAN D DIFRASKSI SINAR X

Gambar D.1 Difraktogram ZIF-8

Gambar D. 2 Difraktogram ZIF-8/AM50 Position [°2Theta] (Copper (Cu))

10 20 30 40 Counts 0 10000 20000 XRD

Position [°2Theta] (Copper (Cu))

10 20 30 40 Counts 0 5000 10000 15000 ZIF-8 Al-MCM-41 (50)

Gambar D.3 Difraktogram ZIF-8/AM100

Gambar D. 4 Difraktogram ZIF-8/AM200 Position [°2Theta] (Copper (Cu))

10 20 30 40 Counts 0 5000 10000 ZIF-8 Al-MCM-41 (100)

Position [°2Theta] (Copper (Cu))

10 20 30 40 Counts 0 5000 10000 15000 ZIF-8 Al-MCM-41 (200mg)

Gambar D.5 Difraktogram ZIF-8/AM400 Position [°2Theta] (Copper (Cu))

10 20 30 40 Counts 0 100 200 300 400 ZIF-8 Al-MCM-41 (400mg)

LAMPIRAN E HASIL FTIR

Gambar E.1 Spektrum dan data FTIIR ZIF-8

Peak Intensity Corr.

Intensity ^Base (H) ^{Base (L) Area Corr.} Area 1 420,5 33,501 13,899 441,71 401,21 15,752 2,597 2 692,47 37,261 6,88 711,76 673,18 14,758 1,054 3 758,05 33,895 10,869 815,92 711,76 40,266 3,855 4 839,06 43,967 0,132 844,85 815,92 10,254 0,014 5 952,87 41,493 1,746 960,58 931,65 10,61 0,16 6 995,3 33,853 8,9 1053,17 960,58 36,882 2,668 7 1089,82 39,805 2,462 1109,11 1070,53 14,831 0,403 8 1145,75 29,477 11,721 1161,19 1111,03 21,562 2,362 9 1176,62 36,56 4,993 1230,63 1161,19 26,517 0,618 10 1257,63 42,936 0,764 1269,2 1230,63 13,959 0,112 11 1307,78 32,644 10,57 1330,93 1274,99 22,376 2,025 12 1383,01 26,758 1,684 1390,72 1344,43 18,648 0,229 13 1423,51 30,732 4,277 1442,8 1392,65 24,12 1,558 14 1448,59 33,09 0,929 1531,53 1442,8 38,055 0,222 15 1583,61 40,037 2,285 1642,12 1546,96 29,581 0,765 16 1676,2 36,042 6,73 1728,28 1631,82 38,644 3,11 17 2929,04 40,296 1,877 2949,26 2881,75 25,591 0,404 18 3134,43 42,024 0,806 3147,93 3120,93 10,041 0,097 19 3481,63 42,504 0,117 3485,49 3477,77 2,862 0,005

LAMPIRAN E : SEM-EDX E.1 SEM-EDX ZIF-8

Peak Intensity Corr.

Intensity ^Base (H) ^{Base (L) Area Corr.} Area 1 420,5 23,803 17,899 449,43 401,21 25,566 4,034 2 694,4 32,68 5,002 715,61 688,61 11,005 0,088 3 759,98 28,201 14,811 825,56 717,54 44,732 5,208 4 837,13 43,091 0,324 858,35 827,49 11,214 0,046 5 942,97 40,208 2,968 962,51 935,51 10,031 0,24 6 995,3 29,322 9,194 1014,59 962,51 23,048 1,973 7 1089,82 32,382 2,733 1118,75 1070,53 22,232 0,556 8 1145,75 21,496 15,009 1163,11 1120,68 21,691 3,148 9 1178,55 31,075 6,382 1215,19 1163,11 22,817 1,052 10 1224,84 40,267 0,176 1276,92 1222,91 20,331 0,138 11 1309,71 29,568 14,26 1332,86 1278,85 21,968 2,662 12 1383,01 35,253 4,127 1392,65 1344,43 19,197 0,436 13 1425,44 27,117 5,813 1442,8 1392,65 25,626 2,203 14 1462,09 29,021 1,503 1504,53 1456,3 22,815 0,089 15 1583,61 38,254 1,74 1599,04 1556,61 17,147 0,373 16 1678,13 33,891 7,074 1726,35 1631,83 40,094 3,469 17 2929,97 38,269 1,811 2949,26 2887,53 24,699 0,362 18 3136,36 28,225 1,622 3147,93 3091,99 22,523 0,296 19 3462,34 36,796 0,043 3464,27 3460,41 1,674 0,001

LAMPIRAN F HASIL SEM-EDX

El AN Series _[wt.%] ^{Unn.C Norm. C} _[wt.%] ^Atom.C _[at.%] ^Error _[%]

N 7 K-series 35,34 31,51 40,03 5,5

Zn 30 K-series 33,80 30,14 8,20 1,0

C 6 K-series 27,74 24,73 36,64 3,4

O 8 K-series 15,26 13,61 15,13 2,7

Total : 112,14 100,00 100,00

El AN Series _[wt.%] ^{Unn.C Norm. C} _[wt.%] ^Atom.C _[at.%] ^Error _[%] Zn 30 K-series 39,27 34,73 10,01 1,1 N 7 K-series 34,25 30,29 40,75 5,2 C 6 K-series 23,93 21,17 33,20 2,9 O 8 K-series 15,11 13,37 15,74 2,5 Si 14 K-series 0,48 0,43 0,29 0,1 Al 13 K-series 0,02 0,02 0,01 0,0 Total : 113,07 100,00 100,00

LAMPIRAN G HASIL TGA G am bar G .1 T er m og ra m ZI F -8

G am bar G .2 T er m og ra m ZI F-8/ A M100

LAMPIRAN H ADSORPSI-DESORPSI N2

G.3 : Kurva Isoterm ZIF-8/AM100

“ Halaman sengaja dikosongkan”

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BIODATA PENULIS

Penulis bernama lengkap Achmad Rizal Firmany, dilahirkan di Mojokerto, 1 0 J u li 1995, merupakan anak pertama dari tiga bersaudara. Penulis telah menempuh pendidikan formal, yaitu MI Ulumuddin (2001-2007), MTs Roudlotun Nasyi’in (2007-2010) dan SMA Negeri 1 Puri (2010-2013). Penulis diterima di Jurusan Kimia-ITS Surabaya melalui jalur SNMPTN undangan dan terdaftar dengan NRP 1413 100 010. Selama kuliah, penulis aktif di Badan Eksekutif Mahasiswa ITS (BEM ITS) sebagai staf ITS Education Care Center (IECC) (2014-2015), Badan Ekskutif Fakultas Matematika dan Ilmu Pengetahuan Alam (BEM FMIPA) sebagai staf ahli Badan Koordinasi (Bakor) Pemandu (2015-2016) dan Himpunan Mahasiswa Kimia ITS sebagai Kepala Departemen Sosial (2015-2016). Selain itu, Penulis merupakan Peserta aktif LKMM PraTD FMIPA ITS (2013), LKMM TD HIMKA ITS (2014), PP LKMM VIII FMIPA ITS (2014). LKMM TM FMIPA ITS (2015) dan Fasilitator LKMM TM ITS (2016) di ITS. Selama masa studi di ITS, penulis aktif dalam berprestasi dalam bidang keilmiahan. Adapun prestasi yang pernah dicapai adalah Juara 2 Olimpiade Sains Nasional (OSN) Pertamina Kategori Proyek Sains (2014). Di Jurusan Kimia ITS, Penulis mengambil bidang minat Kimia Material dan Energi dalam menyelesaikan Tugas Akhir jenjang S1 dibawah bimbingan Dra. Ratna Ediati MS. Ph.D. Segala kritik dan saran bagi Penulis dapat dihubungi melalui email arizal.firmany10@gmail.com.